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  • Title: The effect of beta-blocker (carvedilol) therapy on N-terminal pro-brain natriuretic peptide levels and echocardiographic findings in patients with congestive heart failure.
    Author: Gundogdu F, Bozkurt E, Kiziltunc A, Sevimli S, Arslan S, Gurlertop Y, Senocak H, Karakelleoglu S.
    Journal: Echocardiography; 2007 Feb; 24(2):113-7. PubMed ID: 17313541.
    Abstract:
    BACKGROUND: The favorable effects of beta-blockers on decreasing mortality in contemporary heart failure management have been demonstrated in recent years. N-terminal pro-brain natriuretic (NT-proBNP) peptide levels increase in patients with heart failure. The purpose of this study was to investigate the correlation between the NT-proBNP levels and echocardiographic findings for the patients who received carvedilol therapy in addition to standard therapy for congestive heart failure. METHODS AND RESULTS: A total of 25 patients with symptomatic congestive heart failure and 25 healthy individuals were enrolled in the study. Before introducing beta-blocker into their therapy regimens, baseline transthoracic echocardiography recordings were made and venous blood samples were drawn for establishing NT-proBNP levels. The patients were administered with a minimum dose of carvedilol. Three months after reaching the maximum tolerable dose, blood samples were drawn from the patients once again for NT-proBNP measurements, and transthoracic echocardiography was performed. There was a significant drop in plasma NT-proBNP levels at the end of the study in comparison to the baseline values (baseline: 381.20+/-35.06 pg/mL, at the end of the third month: 254.44+/-28.64 pg/mL; P < 0.001). While left ventricular end-diastolic and end-systolic diameters were observed to have significantly decreased as a result of the therapy (P < 0.001), left ventricular ejection fraction (P<0.001) was established to have increased significantly. CONCLUSIONS: Carvedilol therapy resulted in a marked decrease in plasma NT-proBNP levels and increase left ventricular ejection fraction in patients with congestive heart failure.
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